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Find one ordered pair $(x,y)$ of real numbers such that $x + y = 10$ and $x^3 + y^3 = 162 + x^2 + y^2.$

 Jun 10, 2024
 #1
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You might want to double check the question, because there is no real pair of numbers that holds those properties. There are, however, complex numbers that do:

 

y=10x

 

Therefore, one ordered pair of complex numbers that works is 5 + sqrt(19/14)i and 5 - sqrt(19/14)i

 

Please let me know if I had made any errors!

 Jun 10, 2024
edited by Maxematics  Jun 10, 2024

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